This gives a short background to stone age tools, then shows M. Coutier making them. There is a close-up shot of a small stone age arrowhead and a hand axe. Recently found stone age tools are shown, the uses of which are uncertain. Charts are shown outlining what tools were found in what stone age periods from hand axes to arrowheads and polished axes. There are shots of M. Leon Coutier who has acquired the skill of making these tools in the manner they were made in stone age times. He uses a stone anvil, boxwood bars, boxwood hammers and punches. We see him making a hand axe on the anvil then a finer axe using the wood bar.